x-9+3x+2=21+3x

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Solution for x-9+3x+2=21+3x equation: 



x-9+3x+2=21+3x

We move all terms to the left:

x-9+3x+2-(21+3x)=0

We add all the numbers together, and all the variables

x+3x-(3x+21)-9+2=0

We add all the numbers together, and all the variables

4x-(3x+21)-7=0

We get rid of parentheses

4x-3x-21-7=0

We add all the numbers together, and all the variables

x-28=0

We move all terms containing x to the left, all other terms to the right

x=28

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